
  <form nz-form [formGroup]="validateForm" (ngSubmit)="submitForm()">
    <nz-form-item>
      <nz-form-label [nzSm]="6" nzFor="mention">Top coders</nz-form-label>
      <nz-form-control [nzSm]="16">
        <nz-mention
          #mentions
          [nzSuggestions]="suggestions">
          <input
            id="mention"
            placeholder="input here"
            formControlName="mention"
            nzMentionTrigger
            nz-input>
        </nz-mention>
        <nz-form-explain *ngIf="validateForm.get('mention').dirty && validateForm.get('mention').errors">
          More than one must be selected!
        </nz-form-explain>
      </nz-form-control>
    </nz-form-item>
    <nz-form-item nz-row style="margin-bottom:8px;">
      <nz-form-control [nzSpan]="14" [nzOffset]="6">
        <button type="button" nz-button nzType="primary" (click)="submitForm()">Submit</button>
        &nbsp;&nbsp;&nbsp;
        <button type="button" nz-button (click)="resetForm()">Reset</button>
      </nz-form-control>
    </nz-form-item>
  </form>
